《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新，English version in translation

Picture Selector Library for Android or 图片选择器

A blazingly fast multi-language serialization framework powered by JIT and zero-copy.

OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDF documents, as well as generating PDFs from HTML. It is licensed under the LGPL and MPL.

A collection of sample apps to demonstrate how to use Google's ML Kit APIs on Android and iOS

A library that provides access to Android hidden APIs and internal resources.

Android StackBlur is a library that can perform a blurry effect on a Bitmap based on a gradient or radius, and return the result. The library is based on the code of Mario Klingemann.

An in-memory file system for Java 8+

A lightning fast, transactional, file-based FIFO for Android and Java.

Android Single Activity Framework compatible with Fragment.

▶ Simple and lightweight, yet polished and powerful Android video player based on ExoPlayer

App Debugging & Inspection Tool for Android

An android cloud file manager, powered by rclone. Visit https://roundsync.com for more information!

Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.

Multiple samples showing the best practices in connectivity on Android.

Nightscout version of xDrip+

🔥 ( 持续更新，目前含 300+ 工具类 ) DevUtils 是一个 Android 工具库，主要根据不同功能模块，封装快捷使用的工具类及 API 方法调用。该项目尽可能的便于开发人员，快捷、高效开发安全可靠的项目。

an android library for debugging what we care about directly in app.

Java to Closure JavaScript transpiler

Android device shake detection.

MiceWine is a project that aims to run Windows applications and games on Android smartphones.

Android SQLite support library

Snappy compressor/decompressor for Java

NPatch是一个复刻自LSPatch，以LSPosed为基础的免root的Xposed框架

Native JVM WebAssembly runtime

Javet is Java + V8 (JAVa + V + EighT). It is an awesome way of embedding Node.js and V8 in Java.

AOSP编译出的android.jar，sdk里面以前反射调用的方法，现在可以直接调用了。

Nop Platform 2.0 is a next-generation low-code development platform built from scratch based on the principles of reversible computation, adopting a language-oriented programming paradigm. It inclu…

☕ WebAssembly runtime for Java

🔐 Tutorial of setting up Security for your API with one way authentication with TLS/SSL and mutual authentication for a java based web server and a client with both Spring Boot. Different clients a…